S8P4D Light and Sound Waves

Front

What is light reflection?

Back

Light reflection is the bouncing back of light rays when they hit a surface. For example, a mirror reflects light, allowing us to see our image.

Tags

NGSS.MS-PS4-2

Front

What is light refraction?

Back

Light refraction is the bending of light rays as they pass from one medium to another, such as from air into water. This bending causes objects to appear distorted when viewed through water.

Tags

NGSS.MS-PS4-2

Front

What is sound reflection?

Back

Sound reflection occurs when sound waves bounce off a surface and return to the source. This is why we hear echoes.

Tags

NGSS.MS-PS4-2

Front

What is sound diffraction?

Back

Sound diffraction is the bending of sound waves around obstacles or through openings, allowing us to hear sounds even when we are not in a direct line of sight.

Tags

NGSS.MS-PS4-2

Front

What is the difference between reflection and refraction?

Back

Reflection involves bouncing back of light or sound waves, while refraction involves bending of waves as they pass through different media.

Tags

NGSS.MS-PS4-2

Front

What happens to light when it enters a denser medium?

Back

When light enters a denser medium, it slows down and bends towards the normal line, which is an imaginary line perpendicular to the surface.

Tags

NGSS.MS-PS4-2

Front

What is the normal line in optics?

Back

The normal line is an imaginary line perpendicular to the surface at the point of incidence where light rays strike.

Tags

NGSS.MS-PS4-2

Front

What is the speed of sound in air compared to water?

Back

Sound travels faster in water than in air due to the higher density of water.

Tags

NGSS.MS-PS4-2

Front

What is absorption in the context of light and sound?

Back

Absorption is the process by which light or sound waves are taken in by a material, converting the energy into other forms, such as heat.

Tags

NGSS.MS-PS4-2

Front

What is the principle of superposition in sound waves?

Back

The principle of superposition states that when two or more sound waves overlap, the resulting sound wave is the sum of the individual waves.